TM 5-3895-346-14
ENGINE TUNEUP
ENGINE OVERHAUL
TABLE 4 (1978 Engines)
1978 CALIFORNIA CERTIFIED
1978 FEDERAL CERTIFIED
AUTOMOTIVE CONFIGURATIONS
AUTOMOTIVE CONFIGURATIONS
Engine
4-53TC
Engine Families
4L-53N
Families
Injectors (a)
5A55
Injectors (a)
C40
5A60
C45
C50
APPROVED CONSTANT
APPROVED CONSTANT
HORSEPOWER FOR TTAC ENGINES
HORSEPOWER FOR TT & TTA ENGINES
MAXIMUM (b)
MAXIMUM FULL
2800
FULL LOAD SPEED
2500
LOAD SPEED (b)
MINIMUM FULL
2500
MINIMUM FULL
2400
LOAD SPEED
LOAD SPEED
CAMSHAFT
CAMSHAFT
LOBE POSITION
STD
LOBE POSITION
ADV.
INJECTOR
5A55-1-496
INJECTOR
TIMING
5A60-1-508
TIMING
1.470
THROTTLE DELAY
Fuel
THROTTLE DELAY (e)
YIELD LINK
Modulator
YIELD LINK
REQ
TURBOCHARGER
T04B98
TURBOCHARGER
A/R
96
A/R
3LM353
2.7 sq. in.
(a) Not to exceed injector size and maximum operating speed that has been established. No-load speed will
vary with injector size and governor type.
(b) No-load engine speed will vary with injector size and governor type.
(c)
Large fill hole (0.250 inch dia.) 0.016-inch discharge orifice. Use a minimum idle speed of 500 rpm on all
engines.
FUEL INJECTOR TIMING GAGE CHART
CAM LOB
INJECTOR
TOOL NO.
SETTING
POSITION
5A55
J 9595
1.496
Standard
5A60
J 9595
1.496
Standard
5A60 (Calif. Cert. only)
J 8909
1.508
Standard
416
